Sanhui Shin and Kokoro Isomura will play each other in the quarter of the Zhangjiagang Challenger for the 3^rd time in their career. They are scheduled to compete on Friday at 6:00 pm on Centre Court. In the following paragraphs, you can find the head to head analysis and prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Sanhui Shin who should win in 3 sets.

As per the initial odds, Sanhui Shin is the pick to win this match.
Sanhui Shin -> 1.48
Kokoro Isomura -> 2.5

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Prediction and head to head Sanhui Shin vs. Kokoro Isomura

This will be the 3^rd time that Sanhui Shin and Kokoro Isomura play each other. The head to head is 1-1 (see full H2H stats), 1-0 on hard.

The last time that they played, Isomura won 2-6 6-3 6-3 in the 2^nd round in M15 Tokyo back in 2024.

Sanhui Shin

Ranked no. 406, Shin reached the quarter after defeating Woobin Shin 7-5 7-6(4) and Fajing Sun 6-3 6-1.

In the 2^nd round, Shin had a good straight sets win against Sun (6-3 6-1). During the match, Shin scored 73 points vs Sun’s 53. The Korean was very aggressive to blast 26 winners.

Regarding the service games, Shin fired 2 aces and he committed only 2 double faults. Sanhui Shin lost the serve once and he saved 4 break points. Furthermore, Shin put 63% of his first serves in, winning 70% (26/37) of the points behind his 1st serve and 45% (10/22) on the 2nd serve. Shin broke Sun 5 times after converting 45% of his break points (5/11).

Overall Performance in this tournament

The Korean hasn’t dropped yet a set in this tournament to conquer 56% of the points he played.

Shin has a solid match record in the last 7 years having won 65% of his matches (175-94). 32-14 on hard in 2025. In connection with his performance on the same surface of this competition, Shin has a compiled129-73 record in the last 7 years on hard.

Sanhui’s best result of the current season was getting to the final in M25 Anning,M15 Andong,M25 Changwon and M15 Wuning.

The Korean has a compiled 46-20 win-loss record in 2025, 32-14 on hard (See FULL STATS).

Previously in the Zhangjiagang Challenger

Sanhui has never competed in this tournament before.

Kokoro Isomura

Ranked no. 480, Kokoro reached the quarter after defeating Sergey Fomin 6-3 6-2 and Jie Cui 3-6 6-2 7-6(9).

In the 2^nd round against Cui, Kokoro recovered from a 1-set down deficit before winning (3-6 6-2 7-6⁹). During the match Isomura and Cui scored the same amount of points (103). However, the world no. 406 was stronger during the important points and that was the most significant difference in the match. Kokoro was very aggressive to blast 45 winners.

Talking about serving, Isomura blasted 9 aces and he committed only 9 double faults. Kokoro Isomura lost the serve 4 times and he saved 7 break points. Furthermore, Isomura put 58% of his first serves in, winning 71% (45/63) of the points behind his 1st serve and 42% (19/45) on the 2nd serve. The Japanese broke Cui 4 times after converting 80% of his break points (4/5).

Overall Performance in this tournament

Isomura has conceded 1 set in the tournament to win 53% of the points he played.

Kokoro’s best result of the season was reaching the final in M15 Luan.

The Japanese has a compiled 25-21 win-loss record in 2025, 23-20 on hard (See FULL STATS).

H2H Performance in the tournament (main draw)

Matches, sets, games and points

Points	Shin	Isomura
Match played	2	2
Tot Set	4	5
Tot Games	41	47
Pts	161-129	163-147
Total Points	290	310
Winners	56	73
%Winners	35%	45%

Both Shin and Isomura played 2 matches. At the moment, Kokoro Isomura lost 1 set while Sanhui Shin hasn’t surrendered a set so far. Shin has played 1 set(s) less than Isomura (4 vs 5). Therefore, Shin played 6 games less than Isomura. Sanhui scored 56 winners (35% of the total points). On the other side, The Japanese bagged 73 winners (45%).

Serve Performance

Serve	Shin	Isomura
Aces	3	17
Avg per match	1.5	8.5
1st in	81/143	96/166
%1st in	57%	58%
1st pts	56/81	73/96
%1st pts	69%	76%
2nd pts	32/62	32/70
%2nd pts	52%	46%

Shin bagged 3 aces (1.5 per match). Isomura scored 17 aces (8.5 per match). Shin won 69% points on his first serve. He extremely effective on his second serve to win 52% of the points. On the other side, Isomura won 76% of the points on his first serve. He had a solid display on his second serve to win 46% of the points.

How they played the important points

Breaks	Shin	Isomura
Won	10	7
Converted	10/22	7/10
% Converted	45%	70%
Conceded	16	15
Saved	11	11
% Saved	69%	73%
Times Broken	5	4

Shin broke his opponents 10 times with a 45% conversion rate. Sanhui dropped his serve 5 times and he saved 69% of the break points that he conceded. Isomura broke his opponents 7 times with a 70% conversion rate. Kokoro conceded his serve 4 times and he saved 73% of the break points that he conceded.

Shin
	R1 Shin	R2 Sun	Total
Score	7-5 7-64	6-3 6-1
Tot Set	2	2	4
Tot Games	25	16	41
pts	88-76	73-53	161-129
Total points	164	126	290
Winners	30	26	56
%Winners	34%	36%	35%
SERVE
Aces	1	2	3
Double Faults	2	2	4
1st in	44/84	37/59	81/143
% 1st in	52%	63%	57%
1st pts	30/44	26/37	56/81
% 1st pts	68%	70%	69%
2nd pts	22/40	10/22	32/62
% 2nd pts	55%	45%	52%
Breaks
Won	5	5	10
Converted	5/11	5/11	10/22
Converted %	45%	45%	45%
Conceded	11	5	16
Saved	7/11	4/5	11
Saved %	64%	80%	72%
Times Broken	4	1	5

Isomura
	R1 Fomin	R2 Cui	Total
Score	6-3 6-2	3-6 6-2 7-69
Tot Set	2	3	5
Tot Games	17	30	47
pts	60-44	103-103	163-147
Total points	104	206	310
Winners	28	45	73
%Winners	47%	44%	45%
SERVE
Aces	8	9	17
Double Faults	6	9	15
1st in	33/58	63/108	96/166
% 1st in	57%	58%	58%
1st pts	28/33	45/63	73/96
% 1st pts	85%	71%	76%
2nd pts	13/25	19/45	32/70
% 2nd pts	52%	42%	46%
Breaks
Won	3	4	7
Converted	3/5	4/5	7/10
Converted %	60%	80%	70%
Conceded	4	11	15
Saved	4/4	7/11	11
Saved %	100%	64%	82%
Times Broken	0	4	4

Upcoming matches in the draw

• Yasutaka UchiyamaUchiyama – Kaichi UchidaUchida (1-2) – H2H and prediction
• Renta TokudaTokuda – Oliver CrawfordCrawford (0-0) – H2H and prediction
• Sanhui ShinShin – (1-1) – H2H and prediction